The Scandalous Sisterhood of Prickwillow Place by Julie Berry

When the headmistress collapses dead, the students at Saint Etheldreda's School decide to keep the news under wraps so they aren't returned to their families.

This is a precocious murder-mystery book for preteens, with very little gore and a lot of innocently made bad judgment calls. It's the kind of story where a church basement strawberry social is the very epitome of the town's social scene.

But it's also a cracking good mystery full of fun characters: these seven Victorian-era British school girls cover the gamut of personality types, from the goth girl to the flirt to the science geek to the actress. You'll find from the 1890's era to modern days there isn't much difference when you gather a group of girls - you'll get sisterhood and teasing, both affection and a few tears.

How long with the crime go unnoticed? And above all, whodunnit? There are quite a few twists and turns to the plot, because it turns out the girls don't know quite as much about things as they'd thought. The gradual drama is fun, and the big reveal is a surprise in many ways.